Engraving-machine



L. J. MOST.

Y ENGRAVING MACHINE.

APPLICATION FILED sEPT.22. 1920.

Patented Nov. 1, 1921.

4 SHEETS-SHEET l.

L. l. IVIOST.l

ENGRAVING MACHINE.

APPLICATION msn sEPLzz, |920.

11,395,86L l Patented Nov. 1, 1921.

4 SHEETS-SHEET 2.

ms uw@ 11,1%

L. J. MUST.

ENGRAVING MACHINE. APPLICATION FILED sI-:Pr.22, 1920.

1,395,861. Patented Nov. 1, `19421.

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L. J. MOST.

ENGRAVING MACHINE. APPLICATION man sEPLzz. .1920.

1,395,861 Patented Nov. 1, 1921,.

4 SHEETS-SHEET 4.

nmnnnnmmnmnn UNITED STATES PATENT OFFICE.

LUcIFEn J. ivros'r, or Nnw YORK, N. Y.l

EN GRAVING-MACHINE.

To all whom t may concern:

Be it known that l, LUCIFER J. Mos'r, a citizen of the .United States, and resident of the city of New York, in the county of Bronx and State of New York, have invented a certain new and useful Engraving-Machine, o'f which the following is a specification.

This invention relates to engraving machines, and particularly to machines that are utilized for engraving or chasing the surfaces of mechanical pencils or fountain pens, for the purpose of imparting a roughened Vsurface to such articles, so as to permit afirm hold thereof by the user, and also for. the purpose of ornamenting these articles. Heretofore, machines of this character embodied various important disadvantages, in that they were contrived merely to produce a singular predetermined engraved effect upon the cylinder of the pencil, and the machines vwere inherently capable. of producing only a certain class of effects; for the reason that the effect produced depended upon the combined result of the configuration of certain of the machine parts vand the manner of their ccaction with other machine parts, and the said effect did not constitute any actual counterpart kof any machine part per se. These machines furthermore operated on but one pencil at one time, required constant manual operation, and were otherwise slow, of -low productivity, and deficient in a number of other respects. n

The principal object of my invention is to overcome the aforesaid disadvantages, and to provide a simple, inexpensive, conveniently manipulable, automatically operated, highly eliicient, and improved engraving machine of increased productivity for the above mentioned purpose.

Another object is to provide a machine for this purpose, wherein the mechanism that executes the chasing operation will be guided and controlled by a master roll, the surface of which itself corresponds to the pattern that is to be engraved upon the pencil cylinders, in contradistinction tothe aforesaid machines wherein the effect produced upon the pen or pencil cylinder is a result of the ccaction ofthe machine parts and is therefore diiiicult of precise predetermination as to character, dimensions, or configuration in the design and construction of the machine.

Specification of Letters Patent.

Application filed September 22, 1920.

Serial No. 412,036.

A further object is to provide. this machine with 'a plurality of interchangeable master rolls, of various patterns, wherewith anyone of a series of patterns may be selected, for engraving the pencil cylinders.

Otherobjects and advantages will hereinafter appear.

' Inthe accompanying drawings,-

Figure l shows a general plan view of the engraving machine.

Fig. 2 is a side elevation of the machine shown in Fig. l.

' F ig. 3 shows a cross-sectional rear-end elevation of the machine.

Fig. 4' shows a cross-sectional side-elevation of the tracer-device that coperates with the master-roll'of the machine.

Fig. 5 is a front elevation of the tracer de- I vice shown in Fig. 4:.

Figs. 6 and 7 show a side and end elevation respectively of one of the master rolls of the machine.

Fig. 8 shows a pencil cylinder which has been engraved with the utilization of the master-roll shown in Figs. 6 and 7 Figs. 9 and 10 show elevations of a master-roll of a different pattern. i Fig. 11 shows a pencil cylinder which has been engraved with the roll shown in Figs. 9 and l0. Figs. l2 and 13 show elevations of a modif lication of the tracer device, which is particularly adaptable for coperation with the roll illustrated in Figs. 9, 10.

A drive pulley l, run by any suitable power belt, not shown, is mounted to revolve loosely upon a drive-shaft 2 which passes through a bearing 3 that forms part of a bracket l projecting from a base or bed 5 ofthe machine, which base is fixed to legs 6 that are in turn secured to any suitable floor, said shaft being adapted to clutch with and unclutch from said pulley, in the manner hereinafter described. The extremity of shaft 2 carries a crank 7, to which is pivotally secured a block 8 that passes through a slotted cross-arm 9, Fig. 2, forming part of a rod l0 fixed to a table 11. Said table and the base 5 are dovetailed together, as shown at l2, Fig. 3, whereby the former is freely slidable over the latter longitudinally, in a direction toward and away from the shaft 2, and hence as the shaft is rotated the crank 7 and block 8 are accordingly revolved, the cross-arm 9 and rod l0 are carried along by said block, and the table 1l is thereby reratented Nov. 1, i921.y

. 18 forming part thereof.

ciprocated forwardly and backwardly along the bed 5. A. screw 7a journaled in a head 7 b of crank 7 and pivotally joined at its end to the block 8 regulates the distance of said block from the shaft 2 and thereby controls the amount of throw Vof the table 11.

Upon the table 11, near its front end 13, is secured an upright wall14, by means of bolts 15 passing through flanges 16 thereof and threading into lugs 17 projecting from the sidesof the table, and near the opposite end of the table is provided a similar w-all vThe walls 18, 14 serve as supporting means for series of mounting devices- 19, 2O for a plurality of pencil cylinders 21, which, as here shown, consist ordinarily of tubular metallic pencil bodies having conical ends 22. Each of the mounting devices 19 comprises a revoluble stud'23 passing through a bearing 24 in the wall 18, and having a knurled conical flange 25 at one extremity thereof and a gear 26 keyed upon its opposite extremity.A Each of the devices 2O comprises a shank27 which.

passesthrough a journal 28, wherein it is maintained against rotation by a feather 27a, whereby it is slidable longitudinally toward and away from the devices 19. One extremityof shank 27is provided with a small sharp point 29 while its opposite end is provided with a knurled head 30, for conven-Y ient manipulation of the device during the Y mounting and demounting of the pencil cylinders 21. The mounting devices 19 v are arranged inl a row along the wall 18 and the devices 2O are similarly arranged along the wall .114,V with a device 20 directly opposite to and coaxial with each of the devices 19, which opposite two devices thus constitute a coperating pair, as shown. When it is desired to mount a pencil cylinder 21, the shank 27 'is withdrawn backwardly away from its opposite coperating device 19 and the straight end of the pencil cylinder is then placedl over the knurled fiange 25, and then theshank 27 is slid back and its point 29 is made to enter into the small opening in the conicalextremity of the cylinder 21. A set screw 31 that passes through thebearing 28 is then tightened to press against the shank 27 and lock it against any longitudinal dislocation. rlheinounting of the cylinder 21 is thus completed, and as the flange 25 bears forcibly against the edge of the cylinder extremity it compels the cylinder to rotate with the stud 23 upon the rotation of its gear 26, the coperation of the stationary point 29 of shank 27 with the opposite extremity'of the cylinder 21 acting as a bearing for the pencil-cylinder,

Y As hereshown, the pencil cylinders 21 when mounted in operative state are six in number and arranged in groups of three at each side of the ylongitudinal center line of the table 11., and'betwcen these two groups is located a master roll 32 which is rotatably mounted Yby means of a flange 33 forming part'of a revoluble stud 34 passing into a central opening inthe extremity of the roll, Vand a dog 33' projecting from the flange enterlng -an opening 33b inthe roll and said stud passes through a bearing 35 in the wall 18. The opposite extremity of the master-roll 32 is held in pivoted state by means of the point 36 of a centering. bar 37 entering a gitu'dinally slidable in a journal 38 forming part of a post 39 projecting froml the extremity of table 11, in which manner the master-,roll may be conveniently mounted in operative state and demounted, and when the roll is in mounted state the bar 37 is locked against Ydislocation by means of the set screw 40 which passes through the journal 38 and is threaded against the bar. TJpon the stud 34 is keyed a gear 41which is small. punch hole in the roll. Said bar is lonsimilar to the gears 26, and beyond the gear Y 41 it has keyed thereon a ratchet wheel 42, whereby any rotation of said ratchet causes Y rotation of the stud 34, gear 41, and the master-roll'32. A trainof gears 43, Fig. 3, mounted on studs 43a secured to the wall 18, transmits the rotation of the gear 41 to each one of the gears 26, whereby any rotation or partial rotation of the stud 34 and masterroll32 transmits equal and equiangular ro-` tation to the studs 23 and pencil-cylinders 21.

Transversely across and Vabove the cylinders 21 and roll 32 is located a carrier-head 44 which is held by-a pair of arms 45 that extend therefrom toward the rear of thema-V chine and form part of a rock-shaft 46Y which ispivoted, by means of set-screws 47, to the extremities 48 of a pair of brackets 49 that are secured to the rear ends of the sides of the machine-bed 5. l In the head 44 is mounted ak 'series of gravers 50, each of which is secured thereto by va set screw 50a, V

for the respective pencil-cylinders 21 and each of said gravers is provided with a dia* mond cutting point 51 that bearsdown on top of the cylinder 21 directly above its longitudinal center line. On top of the masterroll V32 and directly above its center-line is situated a tracer-,wheel 52, Figs. 2, 4, 5, which is secured tothe head 44 in the manner shown in Fig. 4'.v To the rear of the base 5 is secured a flat spring 53 which extends therefrom and is bent upwardly in the form of a loop, as shown in Fig. 2.V From the rock-shaft46 extends an arm 54 towhich is secured a plate 55 through which threads a thumb-screw 56 that bears against the spring Vthreading and unthreading of the screw 56.

V53, whereby ,upon threading the screw 56 The master-roll 32 is very many times bigger in diameter than the pencil-cylinder 21, and its periphery is provided with a series of grooves or indentations 57, Figs. 6, 7, which in their arrangement and configurations correspond to the pattern, Fig. 8, that is to be engraved upon the pencil-cylinders, the high parts 58 of the roll corresponding to the non-engraved areas 59 of the cylinderand the low portions 57 corresponding to the engraved or chased areas 60 of the cylinder, Fig. 8. As the tracer-wheel 52 rides upon the high areas 58 of the roll 32 it elevates the head 44 and thereby maintains the graverpoints 51 in inoperative condition away from the surfaces of the cylinders 2l, While when the wheel 52 is in the low indentation areas 57 of the roll 32 it permits the head 44 to'drop and the graver points 51 to bear downv in operative condition upon the peripheries of the cylinders 21. Assuming, therefore, that the wheel 52 is riding upon the high area 58 of the roll 32 and the table l1 together with all of the parts and mechanism fixed thereto and dependent therewith is reciprocated by the rotation of the driveshaft 2, then the pencil-cylinders 2l move idly under the graver points 51 and no work is performed upon the cylinder-peripheries; Whereas when the table 11 is reciprocated while the tracer wheel is over the low area 57 of the roll 32 then the graver-points 5l bear down forcibly upon the peripheries of the respective pencil-cylinders and cut thereinto one of those fine grooves of which each of the chased areas 60, Fig. 8, is composed. In the practical operation of this machine one complete stroke of the table 11, e., one forward movement of the table 11 in a direction toward the drive-shaft 2 and its subsequent return is suicient to cut one vof the complete fine grooves of which each chased area 60 is composed.

UnderL the ratchet 42 is located a pawl l61 'which is pivoted at 62 to a slide-bar 63, to which is also secured a spring 64 that presses the pawl into mesh with the ratchet. Said bar and the pawl dependent therewith are slidable in a recess 65 in the table 11, in a direction transversely `to that of the movement of the table and toward and away from the ratchet 42. As the bar 63 and pawl 42 are slid toward the ratchet 42,` the latter has imparted thereto a fractional turn, and upon release of the bar 63 a spring 66, located in a recess thereof and bearing thereagainst and againsta portion 67 of the table, forces it away from the ratchet and restores the pawl to initial position. The frictional or angular turn thus imparted to the ratchet 42 is transmitted to the gear 41 and the master-roll 32, and the gear 41 in turn transmits its movement through thegear-train 43 to each of the gears 26 and the pencil-cylinders 2l, all of which as well as the roll 32 thereby receive an equiangular fractional turn which is equal to or sufficient for the distance required between one of the cuts or grooves constituting each chased area 60 and its adjacent cut, in which manner all of the cylinders 21 are thus simultaneously disposed for the reception of a subsequent cut by the graver points upon the succeeding complete stroke of the table 11. ATo a lug 68 forming part of 'the base 5 is secure-d a beveled camblock 69, by means of a screw 70, and the extremity of the slide-bar 63 is forme-d into a coperating beveled-cam 71, whereby as the table 1l completes its return stroke, in a right hand direction as viewed in the drawing, the cam-face 71 abuts against the camblock 69 and the bar 63 is thereby actuated to impart the required fractional turn to the ratchet 42 and cause the equiangular turns to the master-roll 32 and cylinders 21, to render the latter ready to receive the next cut from the gravers.

In the operation of the machine, the continuous running of the drive-shaft 2 causes constant -reciprocation of the table 11, the cams 7l, 69, pawl and ratchet 61, 42, and all of the gears operate to feed automatically equiangular partial turns to the roll 32 and the cylinders 21 at the termination of each complete stroke of the table, and the masterroll 32 automatically guides and controls the gravers 50 to carry on the successive cuts upon the cylinders and to simultaneously chase upon all the cylinders a pattern that corresponds to the design of the periphery of the master-roll. In this manner the machine continually operates to carry out automatically its complete function of simultaneously engraving the surfaces of all the pencilcylinders that are inserted thereinto, until the chasing operation is completed, whereupon the finished cylinders may be conveniently removed and other blank cylinders mounted in their place for receiving the same operation. If desired the master-roll 32 may be also removed and a roll of a different pattern may be conveniently interchange'd and mounted in the machine to take its place. It will be noted that while the diameter of the master-roll is greater and its circumferential area is very much larger than that of the pencil-cylinder, yet, the strokes performed by the tracer wheel 52 Vand the gravers 50, which are held by the common carrier-head 44, are identical, as are also the equiangular partial turns simultaneously imparted to the roll and cylinders; and the result thereof is that while a big, strong, ineX- pensive, and conveniently built structure is afforded in this machine with respect to the master-roll and the tracer-element, the transmission of their coaction to the engraving operation per se upon the pencil-cylinders is performed by the identical or same extent of stroke and angular feed, and without the necessity of any complicated transmission or reducing mechanism. In order to shut off and turn on the power conveniently, upon the removal and reloading of the pencilcylinders into the machine, a clutch 72 is provided comprising a toothed portion 73 upon drive-pulley 1 and a toothed sleeve 74, which drive-shaft 2, by means of the feather 2a, and revolves with said shaft. A shift-lever 75 fulcrumed at 7 6 and engaging' the sleeve 74 at 77 is guided by a plate 7 8 projecting from the base 5, whereby swinging of the leverhandle 7 9 away from the base unclutches the sleeve 7 4 from the toothed pulley-portion 73 and permits the pulley 1 to run idly upon the shaft 2, while reverse action of the lever clutches the members 7 3, 7 4:, and thereby the pulley l to the shaft 2, and resumes the operation of the machine.

In Figs. 9, 1() is illustrated a master-roll of a different pattern lthan that shown in Figs. 6, 7 and 11 shows the chased surface of a pencil-cylinder which is the product of the operation performed with the master-roll in F ig. 9. 1n this pattern', the elongated groove 80 serves to produce the engraved area 81 upon the cylinder, while the indentations 82 serve to produce the checker-board effect 83 upon the cylinder, and it will be evident that an unlimited number of master rolls may be utilized interchangeably in connection with this engraving machine, so as to produce engraved effects upon the cylinders of any pattern er configuration, including even words, monograms, or other such diiiicult patterns. Where a master-roll is provided with indentations that are short, such as the grooves 82, Fig. 9, it is preferable to utilize a tracer of the type shown in Figs. 12, 13, which comprises a leg 84 having fixed thereto a sharp-pointed, fiat tracer-plate 85 which is more suitable than the wheel 52 for dropping into and traversing the entire area of the small indentations.

Figs. 4:, 5, illustrate in detail the connection of the tracerl with the common carrierhead 44;. According to this construction, the tracer-wheel 52 is mounted in a leg 84 having a threaded terminal 86 forming part thereof and threading through a thumb-nut 87 pivotally fitted in the carrier 44. Rotation of the nut 87 adjusts the wheel 52 toward and away from the high surfaces 58 of the master roll 32 until it is regulated to the extent required, whereupon a set-screw 88, passing through the head 14, may be tightened against the leg 84 to secure the wheel 52 in its adjusted position.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim 1. An engraving machine having the comis longitudinally sliiftable on the messer bination of means for rotatably mountingv a plurality of cylinders, an engraved master roll, means for rotatably mounting said roll,

a graver foreach of said cylinders, a tracer for said roll, a common carrier -for said gravers and tracer, means to reciprocate said 'cylinders and roll longitudinally, means to impart' intermittent equiangular rotation to said cylinders and roll, and said roll guiding said tracer to cause said gravers to cut the surfaces of said cylinders in correspondence with Yitsv periphery during reciproca-l tion of the cylinders and roll.

2. An engraving machine having the combination of means for rotatably mounting a plurality of cylinders, a rotatably mounted engraved master-roll, a graver for each of said cylinders, a tracer for said roll, means for carrying .said tracer and graver, means to reciprocate said cylinders and roll longitudinally relatively to said tracer and grav'- ers, means to impart intermittent equiangular rotation to said cylinders and roll, and said roll guiding said tracerjto cause said gravers to cut the surfaces of said cylinders in correspondence with its periphery.

3. An engraving machine having the conibination of means for rotatably mounting aY plurality of cylinders, a rotatably mounted engraved master roll, a graver for each 0f said cylinders, a tracer for said roll, means to reciprocate said cylinders and roll longitudinally relatively to said tracer and gravers, means to impart intermittentequiangular rotation to said cylinders and roll, said roll guiding said tracer to cause said grav-k ers to cut the surfaces of said cylinders inV correspondence with its periphery, and means to apply pressure of said gravers against said cylinders.

4L. An engraving machine having the combination of means for rotatably mounting a l plurality of cylinders, a rotatably mounted engraved master-roll, a graver for eachv of said cylinders, a tracer ,for said roll, means to reciprocate said cylinders and roll longitudinally relatively t0 said tracer and gravers, means to impart intermittent equiangular rotation to said cylinders and roll, said roll guiding said tracer to cause said gravers to cut the surfaces of said cylinders in correspondence with its periphery, means to apply pressure of said gravers against said cylinders, and means to regulate said pressure. Y Y

5. An engraving machine having the combination of means for rotatably mountingl a plurality of cylinders, a rotatably mounted engraved master roll, a graver for each of said cylinders, a tracer for said roll, means to reciprocate said cylinders and roll, means atv with its periphery, a common carrier for said gravers and tracer, and an arm extending from said carrier being pivoted to permit the vertical movement of the carrier and gravers. l

6. An engraving machine having the combination of means for rotatably mounting a plurality of cylinders, a rotatably mounted engraved master roll, a graver for each of said cylinders, a tracer for said roll, a common carrier for said gravers and tracer, means to reciprocate said cylinder androll, meansto impart intermittent equiangular rotation to said cylinders and roll, said roll guiding said tracer to cause said gravers to cut the surfaces of said cylinders in correspondence with its periphery, an arm eX- tending from said carrier being pivoted toy permit the vertical movement of the carrier and gravers, and a spring acting upon said arm-to exert pressure of said gravers against said cylinders.

7. An engraving machine having the com bination of means for rotatably mounting a plurality of cylinders, a rotatably mount` ed engraved master roll, a graver for each of said cylinders, a tracer for said roll, a common carrier for said gravers and tracer, means to reciprocatey said cylinders and roll,

means to impart intermittent eoluiangular rotation to said cylinders and roll, said roll guiding said tracer to cause said gravers to cut the surfacesof said cylinders in correspondence With its periphery, anarm eX- tending. from vsaid carrier being pivoted topermit the vertical movement ofthe carrier and gravers, a spring acting upon said arm to exert ypressure of saidk gravers against pressure of said spring. Y,

8. An engraving machine having the lcombination of means for rotatably mounting a plurality of cylinders, an engraved master roll having a diameter which is several times greater than that of said cylinders, means for rotatably mounting said roll, a graver for each of saidcylinders, a

tracer for said roll, means forcarrying said tracer and .gravers, means to reciprocate said tracer and roll longitudinally relatively to said tracer and gravers, means to impart intermittent equiangular rotation )to said that ofv said cylinders .and having in 4itsf j `I periphery indentations contigurated to corcylinders and roll, and said roll guiding' said tracerA to cause said gravers to cut the; Vsurfaces ofsaid cylinders in correspondence',` y

y ingV a plurality of cylinders, a master roll 9. An engravingmachine having Athe com- `bination of means for rotatably mounting avk ivvvith its periphery.

plurality of cylinders, a master roll having a diameter vvhichis several times greater than respond tothe areas that 'are` to be engraved upon said c linders,.mea` ns for rotatably mounting said roll, a graver for each .ing' a plurality of cylinders, a master roll having a diameter which is several times greater than that of said cylinders and having in its periphery indentations configurated to correspond to the areas that are to be engraved upon said cylinders, means for rotatably mounting said roll, a graver for each of said cylinders, a tracer for said roll, means for carrying said tracer and gravers, meansto reciprocate said cylinders and' roll longitudinally relatively to saidl tracer and gravers, means to impart intermittent equiangular rotation to said cylinders and roll, said roll guiding said tracer whereby its high surfaces actuate said gravers out of effective contact With said cylinders and its lovv surfaces permit said gravers to cut said cylinders, and means to apply pressure of said gravers against said cylinders.

1l. An engraving machine having the combination of means for rotatably mounting a plurality of cylinders, a vrotatably mounted master roll having a diameter which ris several times greater than that of said cylinders and having in its periphery indentations that correspond to the areas that are to be engraved upon said cylinders,

a graver for each of said cylinders, a tracer lfor said roll, means for carrying said tracers vand gravers, means to reciprocate said cylinders and roll relatively to said tracer and graversmeans to impart'intermittent equiyangular rotation to said cylinders and roll,

said roll guiding said tracer whereby its high surfaces actuate said gravers out of effeetive contact With said cylinders and its low surfaces permit said gravers to cut said cylinders, means to apply pressure to said V.gravers against said cylinders, and means to regulate. said pressure.

M n engraving machine having the combination of means for rotatably mountfor said`roll, m eans for carrying said tracer `and ravers means to reci recate said c linf 7 `'ders 4androll longitudinally relatively to `'said .tracer and gravers, means to impart... intermittent equiangular rotation to said cylinders and roll, and said roll guiding said tracer Whereby its high surfaces actuate said gravers out of effective contact With said cylinders and its lovv surfaces permit said gravers to cut said cylinders.

13. An engraving machine having the combinationof means for rotatably mounting a plurality of cylinders, a master roll rotatably mounted and having in its periphery indentations corresponding to the areas that are to be engraved upon said cylinders, a graver for each of said cylinders, a tracer for said roll, means for carrying said tracer `and gravers, means to reciprocate said cylinders and roll relatively to said tracer and gravers, .means to impart intermittent angular rotation to said cylinders and roll, and said roll guiding said tracer whereby its high surfaces actuate said gravers out of effective. contact With said cylinders and its lovv surfaces permit said gravers to cut said Y cylinders.

14. An engraving machine havingl the combination of meansfor rotatably mounting a cylinder, a rotatably mounted master roll having in its periphery indentations corresponding to the vareas' thaty are to be V'engraved upon the cylinder, a graver for the cylinder, a tracerfor said roll, means to reciprocate said cylinder and roll rela-V tively to said tracer and graver, means to impart intermittent angular feed to said cylinder and roll, and saidv roll guiding said tracer whereby its high and loW surfaces actuate said gravers into and out of effective cutting contact with said cylinder.

15. vAn -engraving machine having the.

combination of means for rotatably mounting a cylinder, a rotatably mounted engraved master roll, a graver for said cylinder, a tracer for said roll, means for carrying said tracer and graver, meansto reciprocate said cylinder androllrelatively to said tracer and graver, means to impart intei'mittent equiangular rotation to said cylinder and roll,`and said roll guiding said tracer to cause said graver to cut the surface of said cylinder in correspondence With its periphery.

Y16,'Ain ,engraving machine having the combinationv of means for rotatably'mount-V ing va cylinder, --a `rotatably mounted engraved master roll, agraver for saidicylinder, aftracer for said roll, means to recipro-V cate'saidi'cylinderand roll relatively to said ftraceraiid graver, means to -impart angular feedf'tolsaid cylinder an'droll, andy saidroll A'guidifnfg saidtrace'rfto cause said vgraver to 'cutthe surface .of saidcylinder Jin correc spondence -ivith its periphery.

[17. engraving machine vhaving" the combination with a base, and a drive shaft,

' ofya table adapted to .slide upon saidbase,

. ,meansto reciprocateis'aidtlfle,by the rotation of saidshaft, .uprights Qn Said table,

v.said cylinders, means to regulate the pres- Ameans on said uprights for rotatably mounting in its periphery indentations correlspending to the areas thatare to be engraved upon said cylinders, a spindleV on said upriglits for rotatably mounting said roll, a graver for each of said cylinders, a tracer for said roll, a Vcommon carrier for. said gravers and tracer, .a pivoted arm fixed to said carrier, a spring acting upon said arm to exert pressure of said gravers against said cylinders, means to regulate the pressure of saidspring, a ratchet on said rollspindlea bevel cam on said base, a bar slidable on said table Vhaving abevel cam at one end thereof aiid a pawl, a spring-normally pressing said bar and p'avvl avvay from-said iatcliet,said cams colliding at each reciprocation of said table and thereby shifting said bar to cause said paivl to impart a fractional turn to said ratchet and roll, a `gear on said roll-spindle -receiving said fractional turn, a train ofgears transmitting said fractional turn to eachof said cylinders, and said roll yguiding said tracer whereby its high surinders 18. An engraving l.machine having the combination lWith a base, andV a vdrive shaft,

of a table adapted-to slideV upon said base,VV

means to reciprocate said'table bythe 4rota- .tion of *saidV shaft, means carried by said cylinders, Yan yengraved master roll, means carried by said tableffor rotatably mounting said roll, a graver foreach of2 said cylinders,

vtable for rotatably mounting a'plurality of Y a tracer for said roll, a common carrier for said' gravers and tracer, a pivotedarm fixed to said carrier, a Vspring acting upon said arm to exert pressurer of Ysaid'gravers against sure of said spring, al ratchet on saidrollmounting, a cam on said base,-a bar slidable on said table, a paWl onsaid bar, said bar and cam colliding at each reciprocation` of said'table `and thereby shifting said-bar tok cause saidpaivl to impart affractional turn to said vratchet and roll, a gear receiving said turn, a train of gears transmitting said turn to each. of saidcylinders, and saidy roll guiding said tracer v:tocause said graverstod cut the surfaces of said'` cylinders in correspondence with ,its periphery. i

19. Avnv engraving machine havingfthe combination .Witha base, vand a drive shaft,

of a table adapted .to slideupon -said base, mea-nsy to reciprocate said table-by the rotation :ofsaid shaft, iiie'ansf carried by Isaid table for rotatably mountingV a,plurality of l,.c'ylinders, an engraved master roll, 5Vfnieans sarai-.ahy .said table ser .rotatahlyiaiaantas 1 said roll, a graver for each of said cylinders, a tracer for said roll, a common carrier for said gra-vers and tracer, a ratchet adapted to rotate said roll, a fixed cam, a movable member on said table, a pawl on said member. said member and cam coperating at each reciprocation of said table and thereby causing said pawl to impart a fractional turn to said ratchet and roll, gears receiving and transmitting said turn to said cylinders, an(L said roll guiding said tracer to cause said gravers to cut the surfaces of said cylinders in correspondence with its periphery.

20. An engraving machine having the combination with a base, and a drive shalft, of a table upon said base, means to reciprocate said table by the rotation of said shaft, means carried by said-table for rotatably mounting a plurality of cylinders, an engraved master roll, means carried by said table for rotatably mounting said roll, a graver for each of said cylinders, a tracer for said roll, means for carrying said tracer and gravers, mechanism operated by the reciprocation of said table to impart a fractional turn to said roll and cylinders, and said roll guiding said tracer to cause sai-d gravers to cut the surfaces of said. cylinders in correspondence with its periphery.

21. An engraving machine having the combination with a base, and a drive shaft, of a table upon said base, means to reciprocate said table by the rotation of said shaft, means carried by said table for rotatably mounting a plurality of cylinders, an engraved master roll, means carried by said table for rotatably mounting'sai'd roll, a graver for each of said cylinders, a tracer for said roll, means for carrying said tracer and gravers, mechanism operated by the reciprocation of said table to impart a fractional turn to said roll, means to transmit said turn from said mechanism to said cylinders, and said roll guiding said tracer to cause said gravers to cut the surfaces of sai-d cylinders in correspondence with its periphery.

22. An engraving machine having the combination of means for rotatably mounting a cylinder, a rotatably mounted master roll, a graver for said cylinder, mechanism coacting with said cylinder and said graver,

means to effect relative reciprocation between said graver and said master roll withk the cylinder, means to impart intermittent fractional rotations to said cylinder and roll, and said roll guiding said mechanism to actuate said graver to cut the surface of said cylinder in correspondence with its periphery.

23. An engraving machine for cylinders having the combination of a master roll provided with indentations configurated to correspond to the pattern to be engraved upon the cylinders, means to mount the cylinders, means to transmit fractional turns to said roll and cylinders, gravers for said cylinders, means to reciprocate said roll and cylinders longitudinally relatively to said gravers, and said roll actuating said gravers whereby its high surfaces maintain the gravers out of effective contact with the cylinders and its low surfaces permit said gravers to cut. the cylinders.

24. An engraving machine for cylinders having the combination of a master roll provided with indentations configurated to correspond to the pattern to be engraved upon the cylinders, means to mount the cylinders, means to transmit fractional turns to said roll and cylinders, gravers for said cylinders, means to'reciprocate said roll and cylinders longitudinally relatively to said gravers, and said roll actuating said gravers to cut the surfaces of said cylinders in correspondence with its indentations.

25. An engraving machine 'for chasing cylinders having the combination of a master roll having its surface conigurated to cor-- respond to the pattern to be engraved upon the cylinders, means to pivotally mount the roll and cylinder, means to transmit fractional turns to said roll and cylinder, a graver for said cylinder, means to reciprocate said roll and cylinder longitudinally relatively to said graver, and said roll actuating said graver to cut they surface of the cylinder in correspondence therewith.

Signed at the city of New York, in the county of New York, and State of New York, this 20th day of September A. D.

. LUCIFER J. MOST. 

